Steroidogenic Factor 1 (Nr5a1) is Required for Sertoli Cell Survival Post Sex Determination
| Autor: | Chandra Suma Johnson Miryala, Chandrashekara Kyathanahalli, Sonia S. Hassan, Prashanth Anamthathmakula, Rebecca S. Moreci, Pancharatnam Jeyasuria, Jennifer C. Condon |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Anti-Mullerian Hormone
Male 0301 basic medicine Steroidogenic factor 1 endocrine system Cell Survival medicine.drug_class Population lcsh:Medicine Apoptosis Biology Steroidogenic Factor 1 Article Andrology 03 medical and health sciences 0302 clinical medicine Testis medicine Animals lcsh:Science education Mice Knockout education.field_of_study Sertoli Cells Multidisciplinary Integrases Leydig cell urogenital system lcsh:R Gene Expression Regulation Developmental Proto-Oncogene Proteins c-mdm2 SOX9 Transcription Factor Sex Determination Processes Cell cycle Sertoli cell Androgen 030104 developmental biology medicine.anatomical_structure Female lcsh:Q Tumor Suppressor Protein p53 030217 neurology & neurosurgery Germ cell |
| Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | The elevated level of Steroidogenic Factor 1 (Nr5a1, Sf-1) expression in the male gonadal development pathway, post sex determination, implies a vital role in testis gonadal differentiation. In this study we generated Sertoli cell-specific Nr5a1 KO mice (SC-SF-1−/−) at E14.5, which coincides with testis development post sex determination, using the Amh-Cre mouse model. Analysis of SC-SF-1−/− (Sertoli cell specific Nr5a1 knockout) testes demonstrated apoptosis as early as E15. Further analysis revealed that SC-SF-1−/− gonads displayed lower MDM2 levels resulting in elevated TP53 levels, which we believe may lead to apoptosis of the Sertoli cell population, inferring the possibility that NR5A1 directly regulates MDM2 expression. By E15.5, the Sertoli cell and germ cell population declined in SC-SF-1−/− mice resulting in the disruption of seminiferous cords with limited cord structure remaining at E18.5. Due to the loss of Sertoli and germ cells, the testis weights of SC-SF-1−/− mice at 6-weeks were much reduced; however, SC-SF-1−/− seminal vesicles weights were comparable suggesting intact Leydig cell androgen production. We conclude that NR5A1 regulates the TP53 pathway during development, is essential for fetal Sertoli cell survival and controls the cell cycle of Sertoli cells during differentiation. |
| Databáze: | OpenAIRE |
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